Apple tvOS up to 12.1.2 WebKit type confusion

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Apple tvOS up to 12.1.2. This affects an unknown function of the component WebKit. Executing a manipulation can lead to type confusion. This vulnerability is handled as CVE-2019-8506. The attack can be executed remotely. Additionally, an exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple tvOS up to 12.1.2 (Digital Media Player). It has been declared as critical. This vulnerability affects some unknown functionality of the component WebKit. The manipulation with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 03/25/2019. The weakness was released 03/25/2019 with Google Project Zero as HT209601 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2019-8506 since 02/18/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available. The advisory points out:

A type confusion issue was addressed with improved memory handling.

It is possible to download the exploit at exploit-db.com. It is declared as attacked. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371711 (Apple Safari Multiple Vulnerabilities (HT209603)). This issue was added on 05/04/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 05/25/2022:

Apply updates per vendor instructions.

Upgrading to version 12.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (46647). Entries connected to this vulnerability are available at VDB-132259, VDB-132260, VDB-132264 and VDB-132265. Once again VulDB remains the best source for vulnerability data.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Type confusion
CWE: CWE-843
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

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Qualys ID: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: tvOS 12.2

Timelineinfo

02/18/2019 🔍
03/25/2019 +35 days 🔍
03/25/2019 +0 days 🔍
03/25/2019 +0 days 🔍
03/26/2019 +1 days 🔍
03/17/2025 +2183 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209601
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2019-8506 (🔍)
GCVE (CVE): GCVE-0-2019-8506
GCVE (VulDB): GCVE-100-132316
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/26/2019 15:03
Updated: 03/17/2025 21:41
Changes: 03/26/2019 15:03 (63), 05/20/2020 17:57 (3), 08/07/2023 18:01 (4), 04/25/2024 19:43 (25), 09/09/2024 22:30 (2), 01/29/2025 19:59 (12), 03/17/2025 21:41 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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